Unreal Engine Issues and Bug Tracker (UE-85311)

Description

Crash when enabling Level of Detail Coloration viewmodes in the Dataprep editor while using DX12

This crash does not occur when the project is opened with DX11.

Note that the Dataprep editor does not seem to have a viewport in 4.23.

Steps to Reproduce

Download and unzip the attached asset(s) located [Link Removed]
Run UE4Editor.exe
Create a new Blank Architecture, Engineering, and Construction project with Raytracing support enabled

1. Alternatively, create the project with Raytracing support disabled, but launch the project with -dx12
In the Content Browser, right click > Dataprep > Dataprep Asset
Open the Dataprep Asset
In the top right of the Dataprep Editor, select the + button to the right of Inputs
Select Datasmith File Importer
Navigate to the unzipped folder and select MeshCrashHouse_V3_WithTextures.udatasmith > select Open
In the Dataprep Editor toolbar, select Import
In the Preview Viewport, select Lit > Level of Detail Coloration > Mesh LODs

Result: Project crashes

Callstack

Unhandled Exception: 0x80000003

UE4Editor_D3D12RHI!FD3D12PipelineStateCache::OnPSOCreated() [d:\build\++ue4\sync\engine\source\runtime\d3d12rhi\private\windows\windowsd3d12pipelinestate.cpp:123]
UE4Editor_D3D12RHI!<lambda_9f581b56afde089ae478892a6922d26d>::operator()() [d:\build\++ue4\sync\engine\source\runtime\d3d12rhi\private\d3d12pipelinestate.cpp:451]
UE4Editor_D3D12RHI!FD3D12PipelineStateCacheBase::AddToLowLevelCache() [d:\build\++ue4\sync\engine\source\runtime\d3d12rhi\private\d3d12pipelinestate.cpp:489]
UE4Editor_D3D12RHI!FD3D12PipelineStateCacheBase::CreateAndAdd() [d:\build\++ue4\sync\engine\source\runtime\d3d12rhi\private\d3d12pipelinestate.cpp:638]
UE4Editor_D3D12RHI!FD3D12DynamicRHI::RHICreateGraphicsPipelineState() [d:\build\++ue4\sync\engine\source\runtime\d3d12rhi\private\d3d12state.cpp:503]
UE4Editor_RHI!FCompilePipelineStateTask::DoTask() [d:\build\++ue4\sync\engine\source\runtime\rhi\private\pipelinestatecache.cpp:792]
UE4Editor_RHI!TGraphTask<FCompilePipelineStateTask>::ExecuteTask() [d:\build\++ue4\sync\engine\source\runtime\core\public\async\taskgraphinterfaces.h:847]
UE4Editor_Core!FTaskThreadAnyThread::ProcessTasks() [d:\build\++ue4\sync\engine\source\runtime\core\private\async\taskgraph.cpp:1029]
UE4Editor_Core!FTaskThreadAnyThread::ProcessTasksUntilQuit() [d:\build\++ue4\sync\engine\source\runtime\core\private\async\taskgraph.cpp:855]
UE4Editor_Core!FTaskThreadAnyThread::Run() [d:\build\++ue4\sync\engine\source\runtime\core\private\async\taskgraph.cpp:931]
UE4Editor_Core!FRunnableThreadWin::Run() [d:\build\++ue4\sync\engine\source\runtime\core\private\windows\windowsrunnablethread.cpp:96]

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Fixed

Component	UE - Rendering Architecture - RHI
Affects Versions	4.24
Target Fix	4.25.1

Fix Commit	13508704
Main Commit	14151001
Release Commit	13508704

Created	Dec 2, 2019
Resolved	May 22, 2020
Updated	Aug 26, 2020

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